【摘 要】
：
In this paper,a time-switched space-time (TSST) coded orthogonal frequency division multiplexing (OFDM) schcme against the time-varying channels is proposed.In
【机 构】
：
School of Information Science and Engineering
【基金项目】
：
the Science and Technology Project of Dalian,China
论文部分内容阅读
In this paper,a time-switched space-time (TSST) coded orthogonal frequency division multiplexing (OFDM) schcme against the time-varying channels is proposed.In the TSST-OFDM scheme,it is equipped with four transmit antennas,but only double of them are used for coding in every time slot.It is shown that the signal to inter-antenna interference ratio is a function of Doppler frequency in time-varying channels for a given space-time code.The analyses and simulations results validate that the proposed scheme not only gets timeswitched diversity and lower decoding complexity,but also suffers less time-varying impairments.Hence,it exhibits better performance than quasi-orthogonal space-time coded scheme.
其他文献
While introducing foreign advanced technology and cooperating with Chinese famous research institutes,the high-speed vehicles are designed and take the major ta
A new compact bandpass filter based on two meandered parallel-coupled lines of different lengths in shunt is presented,using the signal-interference technique,t
To evaluate and improve the real-time performance of Ethernet for plant automation (EPA) industrial Ethernet,the real-time performance of EPA periodic data tran
In open and dynamic Internet environment,multi-periods quality of service (QoS),multiple decision-makers based on heterogeneous QoS models and uncertainty weigh
In this paper,we focus on antenna array design for mobile phone with finite volume and propose a novel antenna element structure by capacitive feeding and capac
For super high-rise buildings,the vibration period of the basic mode is several seconds,and it is very close to the period of the fluctuating wind.The damping o
LaF3:Yb3 +,Er3 + nanoparticles were successfully synthesized using solvothermal treatment,and LaF3:Yb3 +,Er3 +/SiO2 core/shell nanoparticles were also prepared
Due to the usable frequency becomes more and more crowed,dynamic spectrum access (DSA) is a new hope to solve this problem.However,DSA in China requires a quant
To investigate the influence of expansion pretreatment for materials on carbon structure,activated carbons(Acs)were prepared from corncob with/without expansion
With the development on high-speed integrated circuit,fast high resolution sampling ADC and digital signal processors are replacing analog shaping amplifier cir